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Finding the Fourth Proportional to 61,608.66, 85,021.18 and 34,745.90

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Solution

The fourth proportional to 61,608.66, 85,021.18 and 34,745.90 is: 47,950.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,608.66 : 85,021.18 = 34,745.90 : x
  2. Step 2: Convert to fraction form
    61,608.66/85,021.18 = 34,745.90/x
  3. Step 3: Cross multiply
    61,608.66x = 85,021.18 × 34,745.90
  4. Step 4: Simplify right side
    61,608.66x = 2,954,137,418.16
  5. Step 5: Solve for x
    x = 2,954,137,418.16/61,608.66
  6. Step 6: Final answer
    x = 47,950.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.